Typescript error -- Error: Cannot find module 'typescript/tsc.js'

I cannot figure out how to make my 'tsc' command working:

tsc
module.js:472
    throw err;
    ^

Error: Cannot find module 'typescript/tsc.js'
    at Function.Module._resolveFilename (module.js:470:15)

My 'package.json' has:

"devDependencies": {
    "@types/node": "^14.11.2",
    "tslib": "^2.0.1",
    "typedoc": "^0.19.2",
    "typescript": "^4.0.3"
  }

And my 'tsconfig.json':

{
  "compilerOptions": {
    "target": "es6",
    "sourceMap": true,
    "declaration": true,
    "declarationDir": "dist/types",
    "strict": true,
    "noUnusedLocals": true,
    "lib": [
      "es2019"
    ]
  },
  "include": [
    "src"
  ]
}

No error during 'npm install'.

When I check up the 'node_modules' folder, typescript exists and the 'tsc.js' file exists within the 'typescript/lib' directory.

node --version: 12.18.4

npm --version: 6.14.6

system: Ubuntu 16.04 LTS

I have tried many of the solution proposed for a similar issue without success:

delete the node_modules folder and then run npm install again
try to reinstall manually: npm install typescript --save-dev
using: npm install typescript-tools --save-dev
...

None of the above gets me any result. Thank you very much for your help.

Solution

For those who gets stuck with that, the command that should be run with your local tsc is:

npx tsc